Connection of SAP Systems 
You can connect SAP Event Management (SAP EM) to other SAP systems in the following ways:
Using SAP Basis Plug-In (PI Basis)
Using SAP Exchange Infrastructure (XI)
Note
We recommend that you use the application interface (PI Basis and SAP R/3 Plug-In) to connect SAP EM to other SAP systems. SAP has developed this interface specifically for connecting SAP EM to an SAP system. You also get the Customizing required for the connection with this connection point.
For more information about connecting to SAP systems, see